bbuss bhoom bhour bo-bo bo-ho bobos bobr bohor bohos bohrs bohus bombo bombs bomoh bomso boobs boomb booms boors booru boosh borbo bormo boro- borom boroo boros borou borro borsh borsu borum borus boshu bosom bosor bosso bours brmmm brobo brobs brohm brom- bromo broom broos bross brous brrrr bruhs brumm brush bruss bsous bumbo bumbu buoho burbs buroo buros burro burrs burru burus busho busso bussu busum busur busuu hbomb hhhhh hhour ho-ho ho-oh hobbs hobor hobos hobro hobub hohms hohos hohum homo- homos hoors hoosh horom horos horro horru horus hosho hossu hosur hours houss hross hruso hubbs hubur huhuh huhus humbo humor humur humus hurm hurso hurum husos husum huuru mboro mburu mhorr mmhmm mmmmm mobbs mobor mobos mobro mohor mohrs mohur mombo mombu momos momus moobs mooro moors moosh morbo mormo moror moros morou morro morsh morso morss morum morus mosor mosso mosuo mours mrmom mrmos mrorr muhos mumbo mummu murom muror muros murrh murro murru murum murus mushu musos musou musso o-hum o-r-b obhor oboro obrom oh-oh oh-so ohmmm ohohs ohour ohrob ohrum ohuus omoro ooooh ooooo orbom orbus ormur ormus orobo oromo orosh oroso orosu orrum oruro osmo- osmos ososo ossos ossur osusu ouoro rhomb rhumb ro-ro robbo robbs robo- robor robur rohob rohru rohus romos rooms roomu rorbu rosmo rosso rosss rosu rosum roumm roush rubor rubus ruhrs ruhub rumbo rummo rummu rumor rumos ruoms ruomu rus-m rushh rusor russh russo s-bus s-o-r shhhh shmoo shobo shoor shoos shoro shorr shors shosh shour shous shrob shrub shrum shubb shuru shush smbus smoms smoor smosh smous smrsh smurr smush smuss so-ho so-so sobor sohos sohub sommo somos sooru sorbo sorbs soror soros sorso sorsu sorum sorus soshu soss- sosus souho sourm sours sous- sssrb ssssh sssss subbu subos subss suhum suhur sumos sumou sumru sumur suomu surbo surmo surom suruh surur surus susso susus ubobo uh-oh uh-uh uhhoh uhhuh uhohs uhuhs uhuru umbos umbro umhum umour urbos uroob uros urour urous urshu ursus urubu urums ushus usour uuuuu